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EXHIBIT G WATER INFORMATION <br /> 1 . General <br /> The Evans Mining Resource is within the floodplain and floodway of the South Platte River. <br /> Mining within the floodway will be conducted with no filling or stockpiling above the natural <br /> ground grade. Groundwater is located roughly five feet below the natural grade. All groundwater <br /> onsite is part of the South Platte River alluvial aquifer. Prior to mining, slurry walls will be <br /> installed around the perimeter, as shown on Map C-3. These slurry walls will be for the <br /> development of water storage reservoirs following reclamation. Asphalt Specialties is committed <br /> to protecting the hydrological balance and water quality at the site. <br /> 2. Water Quality Protection <br /> The primary concerns surrounding water quality protection at the Evans Mining Resource site <br /> are the potential impacts to the surface and groundwater from sediment, hydraulic fluids, and <br /> diesel fuel. Sediment will be controlled through the use of stormwater retention within the <br /> disturbance area through the life of the mine. The site will be graded in a manner that maintains <br /> all surficial flows within the disturbed area, in turn containing all sediment and unwanted <br /> discharges from leaving the site. Hydraulic fluids and diesel fuels will be contained within <br /> vehicles that follow best practices of maintenance; these practices include regular inspections of <br /> vehicles, hydraulic lines, and any other potential spill sources. Diesel fuel or other oils will not be <br /> stored on-site. <br /> Any surface water discharges from the site will be sampled in accordance with the existing <br /> NPDES discharge permit. All discharge will be via the approved Outfall under the existing permit <br /> number COG502204. <br /> Evans Mining Resource <br /> February 2025 G'1 Lewicki&Associates <br />